function Xtest_all = load_all_test_data()
    Xtest_all = cell(8,1);
    [Xtest_all{1}, ~] = read_pc('../../../data/halS1_test.X', '../../../data/test.Y48');
    [Xtest_all{2}, ~] = read_pc('../../../data/halS2_test.X', '../../../data/test.Y48');
    [Xtest_all{3}, ~] = read_pc('../../../data/halS3_test.X', '../../../data/test.Y48');
    [Xtest_all{4}, ~] = read_pc('../../../data/halS4_test.X', '../../../data/test.Y48');
    [Xtest_all{5}, ~] = read_pc('../../../data/halS5_test.X', '../../../data/test.Y48');
    [Xtest_all{6}, ~] = read_pc('../../../data/halS6_test.X', '../../../data/test.Y48');
    [Xtest_all{7}, ~] = read_pc('../../../data/halS7_test.X', '../../../data/test.Y48');
    [Xtest_all{8}, ~] = read_pc('../../../data/halS8_test.X', '../../../data/test.Y48');
end

